DrNickBone wrote:
James,

Um....if you really need a citation, some are mentioned in

http://www.clim-past.net/5/803/2009/cp-5-803-2009.html


Thanks for this. This part of your paper jumped out at me:

For the doubled CO2 experiment a number of the ensemble
members with higher control temperature and high sensitivity
became unstable once the global mean surface temperature
exceeded 296 K.

That 296K seems close to the ~300K mentioned above by hgerhauser
(post of 7th January).

Yes, I'd noticed the interesting coincidence. However, it may just be a model quirk. Once the atmosphere is that much warmer, the structure has may have changed sufficiently that the assumptions that went into the model may not be valid. Specifically, whe discussing this with others, I have heard people suggest that the ozone in the upper atmosphere may end up misplaced relative to the (new) atmospheric structure. But I don't know anything about this. Maybe I should look into it since we have several runaway models.

Google finds this, don't think anyone has mentioned it.

http://ams.allenpress.com/perlserv/?request=get-document&doi=10.1175%2F1520-0469%282002%29059%3C3223%3AANSOAO%3E2.0.CO%3B2

James
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